The City of San Bernardino sets its own noise standard in Development Code Chapter 19.20: mechanical equipment must not be discernible beyond the parcel boundary, and exterior noise in residential areas cannot exceed 65 dBA, with interior noise capped at 45 dBA.
San Bernardino applies its own Development Code standard, not the County's. Chapter 19.20, Section 15, states no mechanical equipment or other sound associated with a use shall be discernible beyond any boundary line of the parcel. In residential areas, exterior noise cannot exceed 65 dBA and interior noise cannot exceed 45 dBA. Chapter 19.08.030 makes these Chapter 19.20 standards binding on industrial development. A data center's cooling towers, chillers, and backup generators must meet the 65 dBA residential exterior limit at the nearest home and stay inaudible past the property line. Municipal Code Chapter 8.54 adds nuisance-based noise controls and hours.
Noise discernible past the parcel line or exceeding the 65 dBA residential exterior limit violates Development Code Chapter 19.20 and Municipal Code Chapter 8.54, enforced by Code Enforcement through citations and permit conditions.
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San Bernardino, CA
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